Bluetooth: Add Get/Set socket option to the Blueooth Socket

Added Get/Set socket option for the Bluetooth socket.These APIs
will be called from the frameworks.

CRs-Fixed: 557180
Change-Id: I5ceef23d49e382089f479e8d618eec1dbc6ed5fb
(cherry picked from commit d0ecc89b58f123eff7bee89e8adade79af314a23)
(cherry picked from commit e2f800daa372ef11b003cd1a92c195f3a518f99b)
Bluetooth: SAP: Add SAP high security support to Bluetooth APP
This change consists of:
High security authentication changes

Change-Id: I08d4e411c31257794256a06447179229b0119e6a
(cherry picked from commit 22644ac)
(cherry picked from commit 9b8c962)